* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #222;
  line-height: 1.6;
}

/* ---- Navigation ---- */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  z-index: 100;
}

nav {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: #2e7d32;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  text-decoration: none;
  color: #444;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #2e7d32;
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  padding: 6rem 1.5rem 4rem;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.highlight {
  color: #2e7d32;
}

.hero-content p {
  font-size: 1.25rem;
  color: #555;
  margin-bottom: 2rem;
}

/* ---- CTA Button ---- */
.cta-btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: #2e7d32;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  transition: background 0.2s;
}

.cta-btn:hover {
  background: #1b5e20;
}

/* ---- Sections (shared) ---- */
.about,
.product,
.contact {
  max-width: 800px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
  text-align: center;
}

.about h2,
.product h2,
.contact h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #2e7d32;
}

.about p,
.contact p {
  font-size: 1.1rem;
  color: #555;
}

/* ---- Product Card ---- */
.product-card {
  background: #f9f9f9;
  border-radius: 12px;
  padding: 3rem 2rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.product-card p {
  font-size: 1.1rem;
  color: #555;
  margin-bottom: 1.5rem;
}

.features {
  list-style: none;
  margin-bottom: 2rem;
}

.features li {
  padding: 0.4rem 0;
  font-size: 1rem;
  color: #444;
}

.features li::before {
  content: "\2713\0020";
  color: #2e7d32;
  font-weight: 700;
}

/* ---- Contact ---- */
.email-link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 1.15rem;
  color: #2e7d32;
  font-weight: 600;
  text-decoration: none;
}

.email-link:hover {
  text-decoration: underline;
}

/* ---- Footer ---- */
footer {
  text-align: center;
  padding: 2rem 1.5rem;
  background: #222;
  color: #aaa;
  font-size: 0.9rem;
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .hero-content h1 {
    font-size: 2rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.9rem;
  }
}